Home / 74,311.81-102,548.66-40,320.36

Finding the Fourth Proportional to 74,311.81, 102,548.66 and 40,320.36

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Solution

The fourth proportional to 74,311.81, 102,548.66 and 40,320.36 is: 55,641.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,311.81 : 102,548.66 = 40,320.36 : x
  2. Step 2: Convert to fraction form
    74,311.81/102,548.66 = 40,320.36/x
  3. Step 3: Cross multiply
    74,311.81x = 102,548.66 × 40,320.36
  4. Step 4: Simplify right side
    74,311.81x = 4,134,798,687.12
  5. Step 5: Solve for x
    x = 4,134,798,687.12/74,311.81
  6. Step 6: Final answer
    x = 55,641.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.